Product photo (manufacturer datasheet) · industrial fiber-to-serial protocol converter
ZJIC200-1F2S
Protocol Converter · Fiber-to-Serial · 1000Base-X + 2×RS232/485
Industrial Gigabit Fiber-to-Serial Protocol Converter · 1×1000Base-X + 2×RS232/485 · AC 220V/DC 24V/48V
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◆Gigabit 1000Base-X
◆Fiber-to-Serial Conversion
◆Desktop/DIN-Rail/Wall Mount
◆AC220V / DC 24V/48V
◆-40 ~ 75°C · IP40 Fanless
◆5-Year Warranty
Overview
The ZJIC200-1F2S is an industrial gigabit fiber-to-serial protocol converter that converts a single 1000Base-X fiber port (SC/ST/FC, single-mode or multimode) into 2 × RS232/485 serial channels for long-distance transmission of serial data over fiber. It ships in AC 220V (100–240V) single-input, DC 24V (12–36V) or DC 48V (36–56V) dual-input power variants, with reverse-polarity and overload protection, drawing a maximum of 3 W. Housed in a fanless IP40 metal enclosure (120×32×95 mm) that supports desktop, DIN-rail or wall mounting, it operates from -10 to +60°C in the standard version or -40 to +75°C in the wide-temperature version — suited for industrial sites that need to carry legacy RS232/485 serial equipment over a gigabit fiber link.
Is This the Right Fit?
Six real deployment scenarios matched to this model's actual fiber-to-serial specifications.
Fiber-to-Serial Conversion PointGenuine photoelectric conversion: the 1000Base-X fiber signal is converted directly to 2 × RS232/485 electrical serial channels — a true fiber media/protocol conversion point, not a copper Ethernet pass-through.
Legacy Serial Equipment NetworkingBuilt for exactly 2 × RS232/485 channels (5-pin terminal) — the right port count to bring PLCs, RTUs or meters with only a serial interface onto a gigabit fiber network.
DIN-Rail Cabinet Mount for Wide-Voltage RetrofitDefault DIN-rail installation plus selectable AC 220V (100–240V) or DC 24V/48V (12–36V/36–56V) input lets the unit drop straight into an existing electrical cabinet alongside other DIN-rail gear, no separate power adapter needed.
Outdoor Wide-Temperature CabinetThe wide-temperature variant operates from -40 to +75°C (storage to -40~85°C) with strong EMC immunity (EN61000-4 series, Level 3) — suited to unheated outdoor cabinets in cold or hot climates.
Desktop Plug-and-Play DeploymentUnlike DIN-rail-only fiber converters, the -1F2S also supports desktop mounting — place it on a bench or shelf for quick commissioning or a temporary serial-over-fiber test link, no cabinet or rail required.
Tunnel / Underground M&E MonitoringDual power input (DC 24V/48V models) plus Level-3 EMC immunity and reverse-polarity/overload protection support the reliability tunnels and underground electromechanical rooms demand.
Not a good fit if:
- Not for direct copper-Ethernet extension or camera/PoE aggregation — this model bridges 1000Base-X fiber to RS232/485 serial only; it has no RJ45 Ethernet ports.
- Not a managed switch — no VLAN, ERPS/RSTP ring redundancy or L2 management; it is a fixed point-to-point protocol converter.
- Fiber interface is fixed (1000Base-X, non-SFP) — fiber mode, connector (SC/ST/FC) and single/dual-fiber must be chosen at order time, not swapped in the field.
Key Features
- Converts 1 × 1000Base-X fiber to 2 × RS232/485 serial channels (5-pin terminal)
- Fiber port SC/ST/FC connector · single-mode/multimode · single-fiber/dual-fiber optional
- Transmission distance: multimode 2 km / single-mode 20, 40, 60 or 120 km
- AC 220V (100–240V) single input or DC 24V (12–36V)/48V (36–56V) redundant dual input
- Fanless IP40 metal enclosure · desktop/DIN-rail/wall-mount · max 3 W consumption
- Wide temperature -40 ~ +75°C (wide-temp model) · reverse-polarity & overload protection · 5-year warranty
Specifications
IEEE Standards
| IEEE802.3 | 10BaseT Ethernet |
| IEEE802.3u | 100BaseT(X) and 100BaseFX Fast Ethernet |
| IEEE802.3ab | 1000BaseT(X) Ethernet |
| IEEE802.3z | 1000BaseX Ethernet |
| IEEE802.3x | Flow Control |
Switching
| MAC Address Table | 1K |
| Packet Buffer | 1 Mbit |
| Forwarding | Store-and-forward |
Interfaces
| Serial Ports | 2 × RS232/485 (5-pin terminal) |
| 1000Base-X Port | 1000Base-X (fixed), single-mode/multimode optional, SC/ST/FC optional, single/dual fiber optional |
| 1000Base-FX Distance | Multimode 2 km; single-mode 20/40/60/120 km optional |
| LED Indicators | Power, Fiber Port, Serial Port |
Power
| 24V Input | 4-pin terminal, dual redundant input; 24VDC range 12–36VDC |
| 48V Input | 4-pin terminal, dual redundant input; 48VDC range 36–56VDC |
| 220V Input | 4-pin terminal, single power; 220V range 100–240VAC |
| Power Consumption | Max 3 W |
| Power Protection | Reverse-polarity & overload |
Physical
| Housing | IP40 metal enclosure |
| Mounting | DIN-rail (default), desktop/wall-mount optional |
| Dimensions | 120 (W) × 32 (H) × 95 (D) mm |
Certification
| EMC | CE, FCC |
| EMI | FCC Part 15, EN 55032 (CISPR 32) Class A |
| EMS | EN61000-4-2 (ESD) Level 3, EN61000-4-3 (RS) Level 3, EN61000-4-4 (EFT) Level 3, EN61000-4-5 (Surge) Level 3, EN61000-4-6 (CS) Level 3, EN61000-4-8 |
| Shock | IEC60068-2-27 |
| Free Fall | IEC60068-2-32 |
| Vibration | IEC60068-2-6 |
| Green | RoHS, WEEE |
Environment
| Standard Temp | -10 ~ +60°C |
| Wide Temp | -40 ~ +75°C |
| Storage Temp | -40 ~ +85°C |
| Humidity | 5–95% non-condensing |
Reliability
| MTBF | 320,000 hours |
| Warranty | 5 years |
Models & Ordering
| Model | Product Description | Price |
|---|---|---|
| ZJIC200-1F2S-AC | Industrial protocol converter — 1 × 1000Base-X fixed fiber port (SC/ST/FC, single-mode/multimode, single/dual fiber optional), 2 × RS232/485 serial (5-pin terminal), AC 220V power. | |
| ZJIC200-1F2S-DCL | Industrial protocol converter — 1 × 1000Base-X fixed fiber port (SC/ST/FC, single-mode/multimode, single/dual fiber optional), 2 × RS232/485 serial (5-pin terminal), DC 24V power. | |
| ZJIC200-1F2S-DCH | Industrial protocol converter — 1 × 1000Base-X fixed fiber port (SC/ST/FC, single-mode/multimode, single/dual fiber optional), 2 × RS232/485 serial (5-pin terminal), DC 48V power. |
This page covers all power variants: -AC = AC 220V (100–240V) single input; -DCL = DC 24V (12–36V) redundant dual input; -DCH = DC 48V (36–56V) redundant dual input. The 1000Base-X fiber port is fixed (non-SFP): single-mode or multimode, SC/ST/FC connector, single or dual fiber optional; multimode 2 km, single-mode 20/40/60/120 km. The requested model is ZJIC200-1F2S.
Dimensions
unit: mm
Your Brand. Factory-Direct Supply.Neutral casing, ready for your logo · Custom port/power options · Small batches welcome.
Custom & OEM →Who uses it, where it goes and how to install it
Written for the ZJIC200-1F2S from its own specifications: 1 × 1000Base-X fixed fiber port to 2 × RS232/485 serial, multimode 2 km or single-mode 20/40/60/120 km, AC 220V or redundant DC 24V/48V, max 3 W.
Who it is for
- Utilities and substations — Carry RS485 meter, RTU or protection-relay data between buildings over fiber, which is not affected by ground potential differences or lightning on long copper runs; the -DCH model runs from a 48V DC station supply.
- Factories with legacy PLCs and drives — Equipment that only has an RS232 or RS485 port can be reached over a fiber link instead of re-cabling copper through noisy areas; 2 serial channels per unit.
- Tunnels, pipelines and traffic systems — Single-mode reach of 20, 40, 60 or 120 km links remote serial sensors, signs or controllers to a control room; the wide-temperature build runs at -40 ~ +75°C in roadside cabinets.
- Integrators commissioning serial links — Besides DIN rail it can sit on a desk or shelf for bench testing, and LEDs for power, fiber and serial port show at a glance whether the link is up.
Where and how to install
- Cabinet mounting — DIN rail is the default; desktop or wall mounting is optional. The unit is 120 × 32 × 95 mm in an IP40 metal housing, so it needs a closed cabinet outdoors. Leave room in front for the fiber bend radius.
- Fiber type and ends — The 1000Base-X port is fixed, not SFP: choose single-mode or multimode, SC/ST/FC and single or dual fiber at order time to match the cable already installed. Both ends of the link must use the same fiber mode and connector type; clean connectors before mating.
- Serial wiring — The 2 serial channels are on a 5-pin terminal. For RS485 use shielded twisted pair, keep A/B polarity consistent, fit 120 Ω termination only at the two ends of the bus, and keep serial cables away from power cables.
- Power wiring — -DCL (12–36VDC) and -DCH (36–56VDC) have dual redundant inputs on a 4-pin terminal: wire two separate DC sources so one failure does not stop the link. -AC takes a single 100–240VAC input. Consumption is max 3 W.
- Temperature, surge and condensation — Standard model -10 ~ +60°C, wide-temperature model -40 ~ +75°C, humidity 5–95% non-condensing. Surge immunity is Level 3 (EN61000-4-5), but serial lines that leave the building still need an external surge protector and a good ground. In humid cabinets use a heater or drain to avoid condensation.
Link planning: pick the power variant and fiber
The three versions differ only in power input. Fiber mode, connector, single/dual fiber and reach are chosen at order time for all of them.
| ZJIC200-1F2S-AC | ZJIC200-1F2S-DCL | ZJIC200-1F2S-DCH | |
|---|---|---|---|
| Power input | 100–240VAC, single | 12–36VDC, dual redundant | 36–56VDC, dual redundant |
| Power consumption | Max 3 W | Max 3 W | Max 3 W |
| Serial ports | 2 × RS232/485 (5-pin) | 2 × RS232/485 (5-pin) | 2 × RS232/485 (5-pin) |
| Fiber port | 1 × 1000Base-X (SC/ST/FC) | 1 × 1000Base-X (SC/ST/FC) | 1 × 1000Base-X (SC/ST/FC) |
| Reach: multimode / single-mode | 2 km / 20, 40, 60, 120 km | 2 km / 20, 40, 60, 120 km | 2 km / 20, 40, 60, 120 km |
| Operating temperature | -10 ~ +60°C (wide -40 ~ +75°C) | -10 ~ +60°C (wide -40 ~ +75°C) | -10 ~ +60°C (wide -40 ~ +75°C) |
| Typical site | Building with mains | 24 V control cabinet | 48 V substation / telecom |
- Pick multimode for links up to 2 km inside a plant, single-mode 20 km for most campus and substation links, and 40, 60 or 120 km only when the measured cable length needs it.
- Pick single fiber when only one spare strand is left in the cable; pick dual fiber when two strands are available.
Values from the ZJIC200-1F2S manufacturer datasheet. Baud rate is not listed in the datasheet.
Fiber-to-Serial Converter FAQ — ZJIC200-1F2S
What does the ZJIC200-1F2S convert?
It links one 1000Base-X gigabit fiber port to two RS232/485 serial channels on 5-pin terminals, carrying serial data from PLCs, meters or access controllers over fiber for long distances. Forwarding is store-and-forward with a 1K MAC address table and 1 Mbit packet buffer.
How far can the fiber link reach?
Multimode fiber covers 2 km; single-mode options reach 20, 40, 60 or 120 km. The fixed optical port is available with SC, ST or FC connectors, in single-mode or multimode and single- or dual-fiber versions — specify the distance and connector when ordering.
Which power supply options are available?
Three variants: AC 220V (100–240V) single input, or DC 24V (12–36V) and DC 48V (36–56V), both DC versions with dual redundant inputs on a 4-pin terminal. Consumption is just 3 W maximum, with reverse-polarity and overload protection built in.
Can it work in hot or freezing outdoor cabinets?
The standard version operates from -10 to +60 degC and the wide-temperature version from -40 to +75 degC, at 5–95% non-condensing humidity with storage from -40 to +85 degC. The IP40 metal housing carries EN61000-4 Level 3 EMC immunity for electrically noisy industrial sites.
How is it mounted and what warranty applies?
The compact 120 x 32 x 95 mm metal case mounts on a DIN-rail by default, with desktop or wall-mount as options. LEDs show power, fiber-port and serial-port status at a glance. MTBF is rated at 320,000 hours and the converter carries a 5-year warranty.
Do I need a second ZJIC200-1F2S at the other end of the fiber?
Plan on a pair. The page describes it as a fixed point-to-point protocol converter, so the usual build is one unit at each end with the same fiber mode, connector and single/dual-fiber type. If the far end is a switch or other equipment instead, tell us what it is before ordering so we can confirm it will work. If you want the serial data on an IP network, our ZJTS serial device servers are the better fit.
Is the ZJIC200-1F2S transparent to Modbus RTU, and up to what baud rate?
The datasheet does not list the supported baud-rate range or name serial protocols, so we do not want to guess. Send us the baud rate, data format and protocol (for example Modbus RTU at a given speed) of your devices and we will confirm before you order. Also confirm whether each channel is RS232 or RS485 on your site, since both share the 5-pin terminal.
Should I order the ZJIC200-1F2S with single fiber or dual fiber?
Count the free strands in your cable. Single fiber uses one strand for both directions, so it saves cable but the two ends must be a matched pair; dual fiber uses one strand to transmit and one to receive. The port is fixed, so this choice, plus SC/ST/FC and single-mode or multimode, cannot be changed in the field.
How many RS485 devices can I connect to one channel of the ZJIC200-1F2S?
The datasheet does not give a node limit per channel. RS485 is a multidrop bus, and the standard RS485 driver load is 32 unit loads, so a bus of several meters or RTUs polled by one master is normal practice; check the unit load of your devices. Wire the devices in a daisy chain, not a star, with 120 Ω termination at both ends.
Which ZJIC200-1F2S power version should I choose for a 48V DC substation?
Choose -DCH: it accepts 36–56VDC on dual redundant inputs, so you can feed it from two DC breakers. -DCL (12–36VDC) suits 24 V control cabinets, and -AC (100–240VAC, single input) suits sites with only mains. All versions draw max 3 W and have reverse-polarity and overload protection.
What power connector does the ZJIC200-1F2S have, and do I need to confirm it before ordering?
Yes, please confirm the power connector with us before ordering. For Zhongxin Shutong products the power input type and connector can differ between versions and batches, so tell us your supply (AC or DC and the voltage), how you will wire it in the cabinet and your country's plug standard, and we confirm the exact connector and supply version of the ZJIC200-1F2S for your order.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
Our own line — Zhongxin Shutong industrial switches1,500 m² clean rooms100% port-by-port tested-40…+75 °C rated, cycled to +85 °CEN 61000-4 Level 3 EMC immunitySerial-number traceability on every unitISO 9001 · 14001 · 27001 · CMMI L3See the factory →See all certifications →
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